User manual HAFLER SERIES 9180

[. . . ] Series 9180/ 9270 Power Amplifier NOTICE - IMPORTANT SAFETY INFORMATION The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the products enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons. WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. 1. READ INSTRUCTIONS All the safety and operating instructions of your Hafler equipment should be read before power is applied to the equipment. RETAIN OWNERS MANUAL These safety and operating instructions should be retained for future reference. HEED WARNINGS All warnings on the equipment and in the operating instructions are important and should be followed. FOLLOW INSTRUCTIONS All operating and use instructions are important and should be followed. [. . . ] When the heatsinks cool to a safe operating temperature, normal operation of the amplifier resumes. -8- CIRCUIT HIGHLIGHTS The input stage of the 9180/9270 Amplifier utilizes four low-noise, High-g, JFET's (high transconductance junction field-effect transistors), in a fully complimentary, symmetric configuration. This circuit configuration results in excellent front-end headroom and a simple, straightforward connection to the remainder of the circuitry. The ultra low noise characteristics of the JFET's virtually eliminates noise "mixing" (intermodulation) with the music signal, reducing discordant product frequencies known as "noise grain", or "noise fuzz". The input stage is cascode connected to convert the low voltage input system to the high voltage output system, and "speeds up" the front end for superior bandwidth. The cascode stage is connected to an emitter-follower and current mirror configuration that amplifies the current level about ten times, necessary to drive the biasing string and final output stage driver emitter followers. The final output stage uses multiple lateral MOSFET's (Metal Oxide Semiconductor Field Effect Transistors): four devices per channel in the 9180, and six per channel in the 9270. These devices, unlike conventional bipolar transistors, have a negativetemperature coefficient, which means that they do not exhibit "thermal runaway". Thermal runaway is a phenomenon whereby a transistor heats up as it conducts more current, which causes it to get hotter, and conduct more current, and so on, until the device self destructs. Since MOSFET's are inherently self-protecting, no sonically degrading, complex circuitry is required to monitor and protect the output devices. Furthermore, these lateral MOSFET's exhibit a very linear input to output transfer function. Their connection in circuits and operating characteristics are very similar to vacuum tubes, which is perhaps responsible for their widely recognized sonic trait of being very "musical" and non-fatiguing. Conversion to Mono Mode is accomplished by driving the negative input (feedback point) of the right channel with the output of the left channel. This causes the right channel to mirror exactly the output of the left channel, but 180 degrees out of phase. This creates twice the voltage swing to be available across the two red output binding posts. This simple method of bridging the amplifier (involving only one resistor) eliminates the costly and sonically degrading invertor circuitry used in other amplifiers. The Thermal Protection System consists of thermistors (temperature sensitive resistors) mounted to the heatsinks, connected to a comparator system that activates when the heatsinks reach an unsafe operating temperature. The output of the comparator system is connected to a small MOSFET switch that turns off the input stage of the amplifier, which effectively shuts down the entire amplifier. When the heatsinks cool to a safe temperature, the amplifier is turned on again. The Soft Turn On/Off System cooperates with the Thermal Protection System by sensing the high voltage power supply. At power up, when both the comparator and power supply have stabilized to normal operating levels, the Soft Turn On System activates the amplifier circuitry through the same MOSFET switch in the input stage. At power down, the system deactivates the amplifier rapidly before the power supply begins to collapse. This system eliminates spurious noises during the turn on/off cycle. [. . . ] Unplug the power cord before attempting any cleaning operations. Except as specifically detailed in the owners manual, there are no user serviceable parts or adjustments inside the 9180/9270 Amplifier, and all servicing should be referred to qualified, authorized personnel. PARTS LIST Parts List DESIGNATORS l- 99: 101-l 99: 201-299: 301-399: VALUE LEFT CHANNEL RIGHT CHANNEL COMMON PARTS CHASSIS/POWER SUPPLY PART NUMBER DESIGNATOR R13, R113 R14, R114 R15, R115 R16, R116 R17, R117 R18, R118 R19, R119 R20, R120 R21 , R121 R22, R122 R23, R123 R24, R124 R25, R125 R26, R126 R27, R127 R28, R128 R29, R129 R30, R130 R31 , R131 R32, R132 VALUE 267 267 1K 1K 100 100 47. 5K 562 475 10 47. 5 47. 5 221 475 475 475 221 221 221 475K PART NUMBER RMP/4-2670 RMP/4-2670 RMP/4-1001 RMP/4-1001 RMP/4-1000 RMP/4-1000 RMP/4-4752 RMP/4-5620 RMP/4-4750 RMP/4-0100 RMP/4-0475 RMP/4-0475 RMP/4-2210 RMP/4-4750 RMP/4-4750 RMP/4-4750 RMP/4-2210 RMP/4-2210 RMP/4-2210 RMP/4-4753 DESIGNATOR ALL RESISTORS 114 WATT, 1% METAL FILM (unless specified otherwise)) R1, R101 R2, R102 R3, R103 R4, R104 R5, R105 R6, R106 R7, R107 R8, R108 R9, R109 R10, R110 R 1R 1 1, 11 R12, R112 2. 43K 2. 43K 47. 5 47. 5 66. 1 47. 5 47. 5 1K 1K 6. 61K 47. 5K 2. 43K RMP/4-2431 RMP/4-2431 RMP/4-0475 RMP/4-0475 RMP/4-0681 RMP/4-0475 RMP/4-0475 RMP/4-1001 RMPN-1001 RMP/4-6811 RMP/4-4752 RMP/4-2431 -12- DESIGNATOR R33, R133 R34, R134 R35, R135 R36, R136 R37, R137 R38, R138 R39, R139 R40, R140 R41, R141 R42, R142 R43, R143 R44, R144 R45, R145 R46, R146 R47, R147 R201 R202 R203 R204 R205 R206 R207 R208 R209 R210 R211 R212 R213 VR1 , VR101 P1, P101 VALUE 47. 5K 33. 2K 47. 5K 100 100 100 100 15K 10, 5W, Wirewound 1K 4. 75M 1M 1M 1M 1M 7. 5K, . 5 W, Carbon 7. 5K, . 5 W, Carbon 100K 10K 18. 2K 332K 18. 2K 332K 1K 68. 1K 33. 2K 33. 2K 47. 5K 50K Volume PART NUMBER RMP/4-4752 RMP/4-3322 RMP/4-4752 RMP/4-1000 RMP/4-1000 RMP/4-1000 RMP/4-1001 RMP/4-1502 RW5-100 RMP/4-1001 RMP/4-4754 RMP/4-1004 RMP/4-1004 RMP/4-1004 RMP/4-1004 RC/2-752 RC/2-752 RMP/4-1003 RMP/4-1002 RMP/4-1822 RMP/4-3323 RMP/4-1822 RMP/4-3323 RMP/4-1001 RMP/4-6811 RMP/4-3322 RMP/4-3322 RMP/4-4752 RVH-503G RV-102 DESIGNATOR C21, C121 C22, C122 C201 C301 C302 C303 C304 Q1 , Q101 Q2, Q102 Q3, Q103 Q4, Q104 Q5, Q105 Q6, Q106 Q7, Q107 Q8, Q108 Q9, Q109 Q10, Q110 Q11, Q111 Q12, Q112 Q13, Q113 Q14, Q114 Q15, Q115 Q16, Q116 Q17, Q117 Q18, 0118 Q19, 0119 Q20, Q120 Q21, Q121 Q22, Q122 Q201 U1 TS1 TS2 TRM VALUE 0. 01, Polypropylene 0. 01, Polypropylene 0. 01, Polycarbonate 15000, Electrolytic 15000, Electrolytic 0. 01, Ceramic 0. 01, UL Approved 2SK163, Graded 2SK163, Graded 2SJ74, Graded 2SJ74, Graded 2N5550 2N5550 2N5401 2N5401 2N5401 2N5550 2N5415 2N3440 2N2222A 2N3440 2N5415 2SK1057, Graded 2SK1057, Graded 2SK1057, Graded 2SJ161, Graded 2SJ161, Graded 2SJ161, Graded 2N7000 MPSA56 LM393 Thermal Sensor Thermal Sensor Inrush Limitor FDH400 FDH400 1N4148 1 N5245B, 15V 1 N5245B, 15V 1N4148 1N4148 1 N52458, 15V 1 N52458, 15V 1N4148 Diode Bridge RCA Jack, White RCA Jack, Red 5-Way Binding Post AC Voltage Selector Header: Housing: Pins: IEC Connector Stereo/Mono Switch Power Switch PART NUMBER CPP-103A CPP-103A CYV-103 CER-159ES CER-159ES CD-l 03/20 CD-103A SSH614T SSH-614T SSH-617DT SSH-617DT SSH613 SSH-613 SSH-708 SSH-708 SSH-708 SSH-613 SSH-616 SSH-612 SSH-611 SSH612 SSH-616 SSH-717T SSH-717T (9270 Only) SSH-717T SSH-719T SSH-719T (9270 Only) SSH-719T SSH-724 SS-1O1A SS-207 SS-215 SS-215 SSH-618 SS-163 SS-163 SS-162 SS-212 SS-212 SS-162 SS-162 SS-212 SS-212 SS-162 SSH-609 CCH-232 CCH-231 CC-568 CCH-245 CCH-246 CCH-247 CCH-233 SWH-510 SWH-152G (Gray) SWH-152B (Black) TT-9180 TT-9270 (9180) (9270) 1 K Trim ALL CAPACITORS IN MICROFARADS (unless specified otherwise) DESIGNATOR C1, C101 C2, C102 C3, C103 C4, C104 C5, C105 C6, C106 C7, C107 C8, C108 C9, C109 C10, C110 C 1C 1 1, 11 C12, C112 C13, C113 C14, C114 C15, C115 C16, C116 C17, C117 C18, C118 C19, C119 C20, C120 VALUE 330p, Polypropylene 330p, Polystyrene 10p, Mica 8p, Polystyrene 0. 1, Polycarbonate 0. 1, Polypropylene 220, NP Electrolytic 0. 001, Polypropylene 0. 001, Polystyrene 0. 001, Polypropylene 0. 001, Polystyrene 220p, Polypropylene 220p, Polystyrene 0. 1, Polycarbonate 0. 1, Polypropylene 0. 1, Polycarbonate 0. 1, Polypropylene 0. 1, Polycarbonate 0. 1, Polypropylene 100, Electrolytic 100, Electrolytic 0. 1, Polycarbonate 0. 1, Polypropylene 0. 1, Polycarbonate 0. 1, Polypropylene 330p, Polypropylene 330p, Polystyrene 0. 1, Polycarbonate 0. 1, Polypropylene Not Used Not Used Not Used 0. 47, Polycarbonate PART NUMBER CPP-331 (9180) CPS-331 (9270) CM-100 (9180) CPS-080 (9270) CPC-104 (9180) CPP-104MC (9270) CERNP-227 CPP-102 (9180) CPS-102 (9270) CPP-102 (9180) CPS-102 (9270) CPP-221 (9180) CPS-221 (9270) CPC-104 (9180) CPP-104MC (9270) CPC-104 (9180) CPP-104MC (9270) CPC-104 (9180) CPP-104MC (9270) CER-107D CER-107D CPC-104 (9180) CPP-104MC (9270) CPC-104 (9180) CPP-104MC (9270) CPP-331 (9180) CPS-331 (9270) CPC-104 (9180) CPP-104MC (9270) CR1 , CR101 CR2, CR102 CR3, CR103 CR4, CR104 CR5, CR105 CR6, CR106 CR7, CR107 CR201 CR202 CR203 BR301 J1 J101 J2, J102 J201 J301 SW1 S301 T301 F , F101 1 F2, F102 LINE FUSE Power Xformer 5 7 5 7 7 4 10 5 Amp Amp Amp Amp Amp Amp Amp Amp CW-474 Slo-Blo Slo-Blo Slo-Blo Slo-Blo FS-005 (9180) FS-007 (9270) FS-005 (9180) FS-007 (9270) FS-007SB (9180 FS-004SB (9180 FS-010SB (9270 FS-005SB (9270 100-120V) 220-240V) 100-120V) 220-24OV) -13- LEFT/MONO INPUT LEFT/MONO b LEFlOUTPUT MONO/STEREO SWITCH RIGHT INPUT THERMAL SENSORS b THERMAL PROTECTION SYSTEM A TURN ON/OFF SYSTEM SOFT 9180 / 9270 FUNCTIONAL BLOCK DIAGRAM NOIlVtl( R23 lRl5 , RI7 1 1 6 (SEE F&b C H A R T ) d+HV 2: 2N7000 T R40 -a-*, I (SEE FL% C H A R T ) ZiRCUIT SCHEMATIC DIAGRAM R M S E D 1 l/13/91 R201 +HV7. 5K CR201 1 N5245>' R210 68. 1 K R212 33. 2K $ C20, ::a 0. 01 . ' b TO R. @ ; jl5V - 1 1 l---T-++'+Hv NOTE!3 UNLESS SPECIFIED OTHERWISE R33 47. 5K 1. COUPONENT DESIGNATORS: l - 9 9 : LEFT C H A N N E L 101-199: RIGHT CHANNEL 2 0 1 - 2 9 9 : C O M M O N PARTS 301-399: CHASSIS/POWER 7; SUPPLY J101 RIGHT INPUT 4 . [. . . ]